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各Overlay毎の改竄状況の検出に対応

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git-svn-id: file:///Users/lillianskinner/Downloads/platinum/twl/TwlToolsRED@564 7061adef-622a-194b-ae81-725974e89856
This commit is contained in:
n1481 2011-06-24 05:35:10 +00:00
parent 84776df0e1
commit de0d507536
3 changed files with 74 additions and 0 deletions
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68
build/tools/TamperDetectorForSrl/checker.cpp
View File

@ -201,6 +201,73 @@ void Checker::AnalyzeBanner( RomHeader* gHeaderBuf, RomHeader* mHeaderBuf)
false, PRINT_LEVEL_1);
}
void Checker::AnalyzeOverlay( RomHeader* gHeaderBuf, RomHeader* mHeaderBuf)
{
int i;
int g_ovt_entries, m_ovt_entries;
long nowgfp, nowmfp;
ROM_OVT g_ovtBuf, m_ovtBuf;
ROM_FAT g_fatBuf, m_fatBuf;
nowgfp = ftell( gfp);
nowmfp = ftell( mfp);
// ARM9 Overlay
printf( "------- ARM9 Overlay -------\n");
g_ovt_entries = (gHeaderBuf->main_ovt_size) / sizeof(ROM_OVT);
m_ovt_entries = (mHeaderBuf->main_ovt_size) / sizeof(ROM_OVT);
for( i=0; i<g_ovt_entries; i++)
{
// file-id を読み出す
fseek( gfp, ((u32)(gHeaderBuf->main_ovt_offset) + (sizeof(ROM_OVT) * i)), SEEK_SET);
fseek( mfp, ((u32)(mHeaderBuf->main_ovt_offset) + (sizeof(ROM_OVT) * i)), SEEK_SET);
fread( &g_ovtBuf, sizeof(ROM_OVT), 1, gfp);
fread( &m_ovtBuf, sizeof(ROM_OVT), 1, mfp);
// FAT を読み出す
fseek( gfp, ((u32)(gHeaderBuf->fat_offset) + (sizeof(ROM_FAT) * g_ovtBuf.file_id)), SEEK_SET);
fseek( mfp, ((u32)(mHeaderBuf->fat_offset) + (sizeof(ROM_FAT) * m_ovtBuf.file_id)), SEEK_SET);
fread( &g_fatBuf, sizeof(ROM_FAT), 1, gfp);
fread( &m_fatBuf, sizeof(ROM_FAT), 1, mfp);
printf( "- overlay:%d, file_id:0x%lx\n", i, g_ovtBuf.file_id);
Diff( (u32)(g_fatBuf.top), ((u32)(g_fatBuf.bottom) - (u32)(g_fatBuf.top)),
(u32)(m_fatBuf.top), ((u32)(m_fatBuf.bottom) - (u32)(m_fatBuf.top)),
false, PRINT_LEVEL_1);
}
// ARM7 Overlay
printf( "\n");
printf( "------- ARM7 Overlay -------\n");
g_ovt_entries = (gHeaderBuf->sub_ovt_size) / sizeof(ROM_OVT);
m_ovt_entries = (mHeaderBuf->sub_ovt_size) / sizeof(ROM_OVT);
for( i=0; i<g_ovt_entries; i++)
{
// file-id を読み出す
fseek( gfp, ((u32)(gHeaderBuf->sub_ovt_offset) + (sizeof(ROM_OVT) * i)), SEEK_SET);
fseek( mfp, ((u32)(mHeaderBuf->sub_ovt_offset) + (sizeof(ROM_OVT) * i)), SEEK_SET);
fread( &g_ovtBuf, sizeof(ROM_OVT), 1, gfp);
fread( &m_ovtBuf, sizeof(ROM_OVT), 1, mfp);
// FAT を読み出す
fseek( gfp, ((u32)(gHeaderBuf->fat_offset) + (sizeof(ROM_FAT) * g_ovtBuf.file_id)), SEEK_SET);
fseek( mfp, ((u32)(mHeaderBuf->fat_offset) + (sizeof(ROM_FAT) * m_ovtBuf.file_id)), SEEK_SET);
fread( &g_fatBuf, sizeof(ROM_FAT), 1, gfp);
fread( &m_fatBuf, sizeof(ROM_FAT), 1, mfp);
printf( "- overlay:%d, file_id:0x%lx\n", i, g_ovtBuf.file_id);
Diff( (u32)(g_fatBuf.top), ((u32)(g_fatBuf.bottom) - (u32)(g_fatBuf.top)),
(u32)(m_fatBuf.top), ((u32)(m_fatBuf.bottom) - (u32)(m_fatBuf.top)),
false, PRINT_LEVEL_1);
}
// ファイルポインタを戻す
fseek( gfp, nowgfp, SEEK_SET);
fseek( mfp, nowmfp, SEEK_SET);
}
bool Checker::AnalyzeFNT( RomHeader* headerBuf, FILE* fp, Entry* entry, PrintLevel print_enable)
{
@ -445,6 +512,7 @@ void Checker::CheckAllEntries( Entry* gEntry, Entry* mEntry)
while( currentEntry)
{
printf( "- %s", currentEntry->full_path_name);
printf( "\n file-id : 0x%x", currentEntry->self_id);
hisEntry = mEntry->FindFileEntry( currentEntry->full_path_name);
if( hisEntry)

3
build/tools/TamperDetectorForSrl/checker.h
View File

@ -50,6 +50,9 @@ class Checker
/* ROMのバナー領域に対して Diff をかける */
void AnalyzeBanner( RomHeader* gHeaderBuf, RomHeader* mHeaderBuf);
/* Overlayテーブルに登録されている各ファイルに対して Diff をかける */
void AnalyzeOverlay( RomHeader* gHeaderBuf, RomHeader* mHeaderBuf);
/* FNT と FAT を解析して、各ファイルに対して Diff をかける */
bool AnalyzeFNT( RomHeader* headerBuf, FILE* fp, Entry* entry, PrintLevel print_enable);
bool FindEntry( u32 fnt_offset, u16 entry_id, RomHeader* headerBuf, FILE* fp, Entry* entry, u16 parent_id, PrintLevel print_enable);

3
build/tools/TamperDetectorForSrl/main.cpp
View File

@ -143,6 +143,9 @@ int main (int argc, char *argv[])
printf( "\nBanner\n");
checker.AnalyzeBanner( &gHeaderBuf, &mHeaderBuf);
printf( "\nOverlay\n");
checker.AnalyzeOverlay( &gHeaderBuf, &mHeaderBuf);
printf( "\nFNT & FAT\n");
checker.AnalyzeFNT( &gHeaderBuf, gfp, &gEntry, PRINT_LEVEL_0);
gEntry.FollowParent();